CN109757974B - Water injection control method and device, computer equipment and storage medium - Google Patents
Water injection control method and device, computer equipment and storage medium Download PDFInfo
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- CN109757974B CN109757974B CN201910255493.6A CN201910255493A CN109757974B CN 109757974 B CN109757974 B CN 109757974B CN 201910255493 A CN201910255493 A CN 201910255493A CN 109757974 B CN109757974 B CN 109757974B
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Abstract
The application relates to a water injection control method, a water injection control device, computer equipment and a storage medium. The method comprises the following steps: injecting water into the steam generating vessel; detecting whether a dry burning event occurs; when the dry-fire event occurs, water is injected into the steam generating vessel. Whether the steam generation vessel has a dry burning event or not is detected when the steam generation vessel works, and water is injected into the steam generation vessel when the dry burning event occurs, so that the detection of the water level is not needed to be carried out by adopting a magnetic water level sensor, the manufacturing cost of the steam oven is effectively reduced, and the steam oven still can have high detection precision after being used for a long time.
Description
Technical Field
The application relates to the technical field of steam ovens, in particular to a water injection control method, a water injection control device, computer equipment and a storage medium.
Background
Along with the improvement of living standard of people, the eating habits and cooking manners of people are greatly changed, and the eating habits and cooking manners of people are characterized by health and diversification. The steam oven can not only steam rice, cooked wheaten food, fish and the like, but also has the functions of cake baking, chicken baking, low-temperature fermentation, high-temperature disinfection and the like of the traditional oven, and is very popular with people. A general water pump of a steam oven adopts a mode of pouring a certain amount of water into a steam generating vessel at a discontinuous fixed time, so that the water in the steam generating vessel is excessive and even overflows sometimes, a user needs to frequently add water into a water tank of the oven, the overflowing water can influence the cleanness and sanitation of the oven, and the user is inconvenient to use; a general steam oven uses a magnetic water level sensor to judge whether the water level is low or not, indirectly judges whether the water is short of water and the water is burnt, the magnetism of the magnetic water level sensor can be slowly attenuated, the loss of magnetism can occur in long service time, the detection precision is reduced or the detection cannot be carried out, and meanwhile, the manufacturing cost and the fault maintenance cost are increased by using the sensor.
Disclosure of Invention
In view of the above, it is necessary to provide a water filling control method, apparatus, computer device and storage medium for addressing the above technical problems.
A water injection control method, the method comprising:
injecting water into the steam generating vessel;
detecting whether a dry burning event occurs;
when the dry-fire event occurs, water is injected into the steam generating vessel.
In one embodiment, the step of injecting water into the steam generating vessel upon the occurrence of the dry-fire event comprises:
acquiring the residual working time;
when the dry burning event occurs, detecting whether the residual working time is greater than the maximum evaporation time;
and when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount.
In one embodiment, the step of injecting water into the steam generating vessel upon the occurrence of the dry-fire event further comprises:
and when the residual working time is less than or equal to the maximum evaporation time, acquiring a second preset water injection amount, and injecting water to the steam generation vessel according to the second preset water injection amount.
In one embodiment, the second preset water injection amount is in positive correlation with the remaining working time.
In one embodiment, the step of detecting whether the remaining operating time is greater than the maximum evaporation time further comprises:
obtaining the maximum water injection amount;
injecting water into the steam generating vessel according to the maximum water injection amount;
and detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to obtain the maximum evaporation time.
In one embodiment, the step of injecting water into the steam generating vessel comprises:
acquiring a first preset water injection amount;
and injecting water into the steam generation vessel according to the first preset water injection amount.
In one embodiment, the step of detecting whether a dry-fire event occurs comprises:
acquiring a temperature value of the steam generating vessel;
detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel.
A water injection control apparatus, the apparatus comprising:
the water injection module is used for injecting water to the steam generation vessel;
the detection module is used for detecting whether a dry burning event occurs or not;
the water injection module is also used for injecting water into the steam generation vessel when the dry burning event occurs.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the water-filling control method as described in any of the above embodiments when executing the computer program.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the water-filling control method described in any of the above embodiments.
According to the water injection control method, the water injection control device, the computer equipment and the storage medium, whether the steam generation vessel has a dry burning event or not is detected when the steam generation vessel works, and water is injected into the steam generation vessel when the dry burning event occurs, so that the water level is not required to be detected by adopting the magnetic water level sensor, the manufacturing cost of the steam oven is effectively reduced, and the high detection precision can be still achieved after the steam oven is used for a long time.
Drawings
FIG. 1 is a schematic diagram of the logical connections of the elements of a steam oven in one embodiment;
FIG. 2 is a schematic flow chart of a water injection control method according to an embodiment;
FIG. 3 is a block diagram showing a structure of a water injection control apparatus according to an embodiment;
FIG. 4 is an internal block diagram of a computer device in one embodiment;
FIG. 5A is a diagram illustrating a relationship between a water injection duration and a remaining operation time according to an embodiment;
FIG. 5B is a schematic diagram of temperature versus time for a steam generating vessel in one embodiment;
FIG. 5C is a schematic representation of temperature versus time for a steam generating vessel in another embodiment;
FIG. 5D is a schematic representation of temperature versus time for a steam generating vessel in yet another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The water injection control method provided by the application can be applied to a steam oven as shown in figure 1. The steam generating vessel 110 is used for containing water and heating the water when the steam generating vessel is operated, so that the water in the steam generating vessel 110 is boiled and evaporated. The water pump 120 is used to pump out water in the water storage tank 130 and inject the water into the steam generation vessel 110. The temperature sensor 140 is used to detect the temperature of the steam generating vessel 110, detect the temperature of the water within the steam generating vessel 110, and detect whether a dry-fire event has occurred within the steam generating vessel 110. The processing unit 150 is electrically connected to the water pump 120 and the temperature sensor 140, respectively, and the processing unit 150 is configured to acquire the temperature detected by the temperature sensor 140 and control the operation of the water pump 120 to inject water into the steam generating vessel 110.
In one embodiment, as shown in fig. 2, a water injection control method is provided, which is exemplified by the method applied to the steam oven in fig. 1, and includes the following steps:
In the step, water is injected into the steam generating vessel by controlling the water pump to work, so that the water is heated to be boiled and evaporated when the steam generating vessel works, and steam is generated.
In this embodiment, the certain amount of water is injected into the steam generating vessel, which may be the maximum amount of water corresponding to the capacity of the steam generating vessel, or may be a preset amount of water injected into the steam generating vessel.
In this embodiment, after the steam generating vessel is operated, whether the steam generating vessel has a dry-fire event is detected. Specifically, a dry-fire event refers to a steam generation vessel having no water therein as a result of complete evaporation of water therein, while the steam generation vessel continues to operate, continues to heat, results in dry-fire, and thereby produces a dry-fire event.
One embodiment is to detect whether a dry-fire event has occurred based on the magnitude of the temperature change of the steam generating vessel. One embodiment is to detect whether a dry-fire event has occurred based on a temperature sensor of the steam generating vessel.
It is worth mentioning that when the steam generating vessel is in continuous operation or after the steam generating vessel is stopped, the water in the steam generating vessel is completely evaporated, and the thermal conductivity of the metal is high, so that the temperature change amplitude of the metal steam generating vessel is large, and whether a dry burning event occurs can be detected through the temperature change amplitude of the steam generating vessel.
And 250, when the dry burning event occurs, injecting water into the steam generating vessel.
In particular, when the steam generating vessel is now dry burning, it is indicated that the water within the steam generating vessel has completely evaporated, and therefore, water needs to be injected into the steam generating vessel. Through to steam generation household utensils water injection, can make steam generation household utensils continue work on the one hand and produce steam, another is sent out the face, can effectively avoid steam generation household utensils to be heated excessively.
In this embodiment, when a dry-fire event occurs and water is injected into the steam generating vessel, the step 230 is returned to continuously detect whether the dry-fire event occurs, and when the dry-fire event occurs again, water is injected into the steam generating vessel again, so that the operation is repeated until the remaining operating time is zero.
In the embodiment, whether the steam generating vessel has the dry burning event or not is detected when the steam generating vessel works, and water is injected into the steam generating vessel when the dry burning event occurs, so that the water level is not required to be detected by adopting the magnetic water level sensor, the manufacturing cost of the steam oven is effectively reduced, and the steam oven still has high detection precision after being used for a long time.
In order to precisely control the amount of water injected, in one embodiment, the step of injecting water into the steam generating vessel comprises: and acquiring the maximum water injection amount, and injecting water to the steam generation vessel according to the maximum water injection amount.
In this embodiment, at the initial water injection stage, water is injected into the steam generating vessel according to the maximum water injection amount, that is, water with the maximum water injection amount is injected into the steam generating vessel. The maximum amount of water injected is the maximum volume that can be accommodated by the steam generating vessel. In this embodiment, the steam generating vessel is filled with water at the upper limit of its capacity at the initial filling stage to perform cooking.
It is worth mentioning that the water delivery amount of the water pump in unit time is stable, so that the water injection amount can be controlled by controlling the water injection time of the water pump. Therefore, the corresponding water injection amount can correspond to the water injection time. In this embodiment, the maximum water injection amount may be controlled by the maximum water injection time. Therefore, in each embodiment, the water injection amount can be detected and obtained according to the water injection time, that is, the water injection amount is determined according to the water injection time.
In other embodiments, the water injection amount may be controlled by adjusting the water delivery amount of the water pump, and the detection of the water injection amount may be obtained by detecting a flow meter.
In one embodiment, the step of injecting water into the steam generating vessel comprises: and acquiring the maximum water injection time, and injecting water into the steam generation vessel according to the maximum water injection time. Specifically, the maximum water filling time may also be referred to as a maximum water filling duration, in this embodiment, water is continuously filled into the steam generating vessel within the maximum water filling time, or the time for filling water into the steam generating vessel is the maximum water filling time, so as to fill the steam generating vessel. That is, in this embodiment, the time period for which the steam generating vessel is filled with water for the first time in the initial stage is the maximum water filling time.
In order to precisely control the amount of water injection and reduce the number of water injections, in one embodiment, the step of injecting water into the steam generating vessel when the dry-fire event occurs includes: acquiring the residual working time; when the dry burning event occurs, detecting whether the residual working time is greater than the maximum evaporation time; and when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount.
It should be noted that the remaining operating time is the remaining operating time of the steam generating vessel, the remaining operating time is calculated according to the operating time set by the steam generating vessel and the operating time, and the remaining operating time may also be set by a user, for example, receiving an instruction of the user to obtain the remaining operating time. According to different cooking conditions, different residual working time is needed, so that the residual working time is the difference between the actually required working time and the working time.
Specifically, the maximum evaporation time is the time required for the steam generating vessel to continuously work to completely evaporate water after the steam generating vessel is filled with water. That is, the maximum evaporation time is a time obtained by timing with the start of operation of the steam generating vessel as a timing start point and the completion of evaporation of water in the steam generating vessel as a timing end point after the maximum amount of water to be injected into the steam generating vessel is injected.
In this embodiment, in the working process of the steam generation vessel, when dry-fire time occurs, before water injection, it is first detected whether the remaining working time is greater than the maximum evaporation time. When the residual working time is longer than the maximum evaporation time, the residual working time of the steam generation vessel is longer, at the moment, the maximum water injection amount is obtained, water is injected into the steam generation vessel according to the maximum water injection amount, and the water with the maximum water injection amount is injected into the steam generation vessel, so that the time required by the complete evaporation of the water in the steam generation vessel reaches the maximum, namely the steam generation vessel, the occurrence time of the next dry burning event is delayed, and the water injection times can be reduced. It will be appreciated that if a small amount of water is injected in a single shot, the time required for the water in the steam generating vessel to fully evaporate is small, and the steam generating vessel will dry out more frequently during the remaining operating time, resulting in multiple injections. Therefore, in the embodiment, the water with the maximum water injection amount is injected into the steam generating vessel, so that the water injection times can be effectively reduced.
In one embodiment, the step of obtaining the maximum water injection amount when the remaining operating time is longer than the maximum evaporation time, and injecting water into the steam generating vessel according to the maximum water injection amount comprises: and when the residual working time is greater than the maximum evaporation time, acquiring the maximum water injection time, and injecting water into the steam generation vessel according to the maximum water injection time. In this embodiment, when the remaining operating time is longer than the maximum evaporation time and the dry-fire event occurs, water is injected into the steam generation vessel, and the water injection time is the maximum water injection time, so that the water injection frequency can be effectively reduced.
It is worth mentioning that the more the water injection is better, the more the water injection is, heat the water to the required energy of evaporation preface just more, and the water injection is few, then can effectively save the energy consumption for water rapid evaporation improves the work efficiency of cooking.
In order to precisely control the water injection amount and improve the work efficiency, in one embodiment, the step of injecting water into the steam generating vessel when the dry-fire event occurs further comprises: and when the residual working time is less than or equal to the maximum evaporation time, acquiring a second preset water injection amount, and injecting water to the steam generation vessel according to the second preset water injection amount. Wherein the second preset water injection amount is less than the maximum water injection amount.
In one embodiment, the step of obtaining a second preset water injection amount when the remaining operating time is less than or equal to the maximum evaporation time, and injecting water into the steam generation vessel according to the second preset water injection amount includes obtaining a second preset water injection time when the remaining operating time is less than or equal to the maximum evaporation time, and injecting water into the steam generation vessel according to the second preset water injection time. And the second preset water injection time is less than the maximum water injection time.
Specifically, the second preset water injection time may also be referred to as a second preset water injection duration, in this embodiment, water is continuously injected into the steam generating vessel within the second preset water injection time, or the time for injecting water into the steam generating vessel is the second preset water injection time. That is, in this embodiment, the time duration of each water injection to the steam generating vessel is the second preset water injection time.
In this embodiment, since the remaining operating time is less than or equal to the maximum evaporation time, it indicates that if too much water is injected, the injected water will not be completely evaporated in the remaining operating time, and therefore, in this embodiment, a second preset water injection amount smaller than the maximum water injection amount is used to inject water into the steam generation vessel, so that the water in the steam generation vessel can be completely evaporated in the remaining operating time, and a large amount of water is not required to be injected at a time, which can be added in several times, effectively reducing energy consumption, and improving operating efficiency.
In order to accurately control the water injection amount, in one embodiment, the second preset water injection amount has a positive correlation with the remaining operation time.
In this embodiment, the second preset water injection amount has a positive correlation function relationship with the remaining operating time. Namely, the smaller the remaining operating time is, the smaller the second preset water injection amount is, and the larger the remaining operating time is, the larger the second preset water injection amount is. The second preset water injection time and the residual working time are in positive correlation.
Specifically, when the remaining operation time is shorter, the heating time of the steam generating vessel to the water is shorter, and if the water injected into the steam generating vessel is too much, the water in the steam generating vessel cannot be completely evaporated, and thus, as the remaining operation time decreases, the water injection amount into the steam generating vessel is also decreased, and thus, the second preset water injection amount is decreased as the remaining operation time decreases. That is to say, along with the continuous emergence of dry combustion event, steam generation household utensils will continue the water injection, and the water yield of every water injection then can be less and less, so, on the one hand be favorable to the water conservation, on the other hand, then effectively make the water in the steam generation household utensils evaporate completely, effective energy-conservation to improve work efficiency.
In order to obtain the maximum evaporation time, in an embodiment, the step of detecting whether the remaining operation time is greater than the maximum evaporation time further includes: obtaining the maximum water injection amount; injecting water into the steam generating vessel according to the maximum water injection amount; and detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to obtain the maximum evaporation time.
In one embodiment, the step of detecting whether the remaining operating time is greater than the maximum evaporation time further comprises: acquiring the maximum water injection time; injecting water into the steam generating vessel according to the maximum water injection time; and detecting the time for the steam generation vessel to continuously work to completely evaporate the water with the maximum water injection amount, and obtaining the maximum evaporation time.
As described above, the maximum evaporation time is the time required for the steam generating vessel to continue operating to completely evaporate water after the steam generating vessel is filled with water. Therefore, in order to obtain the maximum evaporation time, the maximum evaporation time needs to be obtained by measurement before the comparison of the remaining operation time with the maximum evaporation time is performed. It is worth mentioning that the measurement of the maximum evaporation time may not only precede the step of comparing the remaining operating time with the maximum evaporation time, but also precede the step 210.
In this embodiment, the maximum volume of the steam generating vessel is obtained, the maximum water injection time is calculated according to the maximum volume, so that the maximum water injection amount is accurately injected into the steam generating vessel, and the timing is started when the steam generating vessel starts to operate until the water in the steam generating vessel is completely evaporated, so that the maximum evaporation time is obtained by timing.
In order to precisely control the initial water injection amount, improve the working efficiency and reduce the energy consumption, in one embodiment, the step of injecting water into the steam generating vessel comprises: acquiring a first preset water injection amount; and injecting water into the steam generation vessel according to the first preset water injection amount.
In this embodiment, the first preset water injection amount may be understood as a default water injection amount, specifically, the first preset water injection time may also be referred to as a first preset water injection duration, and at an initial stage, water of the first preset water injection amount is injected into the steam generating vessel, and the first preset water injection amount is smaller than the maximum water injection amount. It is worth mentioning that, if the water that initial stage injected is more, for example, inject the water of maximum capacity, like this, under the shorter condition of cooking time demand, can lead to consuming great energy and heating water, and make evaporation efficiency lower, in addition, also can't make water evaporate completely, therefore, in this embodiment, initial stage, to injecting less water in the steam generation household utensils, like this, can make the steam generation household utensils produce the event of burning dry fast, and then carry out the contrast detection of surplus operating time and maximum evaporation time, with subsequent water injection quantity of real-time adjustment, on the one hand, can effectively avoid the waste of water, on the other hand, be favorable to improving the operating efficiency of steam generation household utensils, reduce the energy consumption.
In order to control the first preset water injection amount, in one embodiment, the first preset water injection amount is obtained; according to the first preset water injection amount, injecting water into the steam generation vessel: acquiring first preset water injection time; and injecting water into the steam generating vessel according to the first preset water injection time. Namely, in the initial stage, the time length of the first water injection to the steam generating vessel is the maximum water injection time. In this embodiment, the water is injected into the steam generating vessel within the first preset water injection time, so that the water injection amount into the steam generating vessel is controlled to be the first preset water injection amount.
In order to further improve the efficiency and reduce the energy consumption, in one embodiment, the first predetermined water injection amount is one fourth of the maximum water injection amount. In this embodiment, the first preset water filling time is one fourth of the maximum water filling time. Like this, can make the first water injection of initial stage can satisfy the demand of cooking to produce the event of drying out sooner, and then carry out the contrast detection of surplus operating time and maximum evaporation time, with subsequent water injection volume of real-time adjustment, on the one hand, can effectively avoid the waste of water, on the other hand is favorable to improving the work efficiency of steam generation household utensils, reduces the energy consumption.
To trigger the detection of a dry burn event, in one embodiment, the step of detecting whether a dry burn event occurs comprises: detecting and acquiring a temperature value of the steam generating vessel; detecting whether the temperature value of the steam generating vessel is greater than the water injection temperature value; and when the temperature value of the steam generating vessel is greater than or equal to the water injection temperature value, detecting whether the dry burning event occurs.
Specifically, the water injection temperature value is a temperature value of water injected into the steam generating vessel. The initial temperature of the water injected into the steam generating vessel is high, and it should be understood that when the steam generating vessel does not start to work, the temperature of the steam generating vessel is low, so that after the water is injected, the temperature of the steam generating vessel rises to a water injection temperature value, and when the temperature of the steam generating vessel rises to the water injection temperature value, water is injected into the steam generating vessel, and the steam generating vessel starts to work, the detection of the dry burning event of the steam generating vessel is triggered.
To detect a dry burn event, in one embodiment, the step of detecting whether a dry burn event occurs comprises: acquiring a temperature value of the steam generating vessel; detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel.
For detecting whether the steam generating vessel has the dry burning event or not according to the temperature value of the steam generating vessel, the following three embodiments can be adopted for detection.
One embodiment is determining that the steam generating vessel has the dry-fire event when the temperature value of the steam generating vessel is greater than the temperature reference value.
In this embodiment, the temperature reference value is a maximum temperature that can be reached after the steam generating vessel is filled with water and heated, and specifically, since a boiling point of water is stable, when water is not completely evaporated under the condition that the steam generating vessel is filled with water, the maximum temperature of the steam generating vessel is also stable, and therefore, after the water is completely evaporated, the steam generating vessel is continuously heated, and the temperature is continuously increased and is greater than the temperature reference value, and therefore, whether the steam generating vessel has the dry-fire event or not can be determined according to whether the detected temperature value of the steam generating vessel is greater than the temperature reference value or not.
In one embodiment, said obtaining a temperature value of said steam generating vessel; the step of detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel comprises: acquiring a temperature value of the steam generating vessel; and detecting the occurrence of the dry burning event of the steam generating vessel according to the change amplitude of the temperature value of the steam generating vessel in a first preset time.
In this embodiment, whether the steam generating vessel has the dry-fire event is determined according to a variation range of the temperature value of the steam generating vessel within a first preset time.
It will be appreciated that the thermal conductivity of metal is greater than that of water, which means that the temperature sensor detects a greater magnitude of change in the temperature value of the steam generating vessel after the water in the steam generating vessel has completely evaporated, or, alternatively, a greater magnitude of change in the temperature value of the steam generating vessel after the water in the steam generating vessel has completely evaporated than the temperature value of the steam generating vessel containing water. Thus, it can be determined that the steam generating vessel is experiencing the dry-fire event.
In one embodiment, the step of detecting whether a dry-fire event occurs comprises: acquiring a temperature value of the steam generating vessel; detecting whether the change amplitude of the temperature value of the steam generating vessel in first preset time is greater than a first preset threshold value or not; and when the change amplitude of the temperature value of the steam generating vessel in first preset time is larger than the first preset threshold value, determining that the steam generating vessel has the dry burning event.
In this embodiment, the first preset threshold is a rising range of the temperature value within a first preset time when the steam generating vessel filled with water is in a working state. After the water in the steam generation vessel is completely evaporated, the steam generation vessel is still in a working state, the temperature of the steam generation vessel is in an ascending stage, the ascending amplitude of the temperature value of the steam generation vessel is large and is larger than a first preset threshold value, and therefore the steam generation vessel can be detected and determined to have the dry burning event.
In one embodiment, the step of detecting whether a dry-fire event occurs comprises: acquiring a temperature value of the steam generating vessel; detecting whether the change amplitude of the temperature value of the steam generating vessel in first preset time is smaller than a second preset threshold value or not; and when the change amplitude of the temperature value of the steam generating vessel in the first preset time is smaller than the second preset threshold value, determining that the steam generating vessel has the dry burning event.
In this embodiment, the second preset threshold is a decreasing range of the temperature value within the first preset time when the steam generating vessel filled with water stops working after being heated. In the steam generating vessel filled with water, the water can absorb the metal steam generating vessel, so that the heat of the metal steam generating vessel is quickly dissipated, and the temperature of the steam generator filled with water is quickly reduced. And after the water in the steam generating vessel is completely evaporated, the temperature of the steam generating vessel is in a descending stage, the rising amplitude of the temperature value of the steam generating vessel is smaller and smaller than a second preset threshold value, and therefore the steam generating vessel can be detected and determined to have the dry burning event.
The following is a specific example:
in the embodiment, a water injection control method of a steam oven is provided, the steam oven comprises a temperature sensor, a steam generating vessel, a water pump, a water storage tank and other devices, and the control method comprises two parts: a first part: and controlling water injection of the water pump, wherein the water pump is used for injecting a fixed amount of water into the steam generation vessel from the water storage tank by default when the water pump starts to work, the subsequent water injection starting time is determined by detecting the temperature value at the bottom of the steam generation vessel by the temperature sensor, and the amount of the injected water is determined according to the length of the residual working time. A second part: and (3) dry burning identification control, wherein if the temperature of the temperature sensor is higher in the working process, a dry burning identification period timing is started, a temperature value at the beginning of timing and a temperature value at the end of timing are recorded, whether dry burning exists or not is identified according to the temperature value at the end of timing and the temperature difference value between the end of timing and the beginning of timing, and if no dry burning exists, the periodic identification processing is repeated until the working is finished or the dry burning occurs. The method realizes automatic water injection, does not need a user to frequently add water into the water storage tank, is convenient to use, can not leave a large amount of residual water in the steam generating vessel after being used, and has the characteristic of convenient cleaning; meanwhile, the traditional magnetic water level sensor is not needed, so that the device has the advantages of saving material cost and fault maintenance cost.
In the control method of this embodiment, the control of water injection by the water pump is improved, and the specific method is as follows:
firstly, the maximum evaporation time Tm of the maximum water injection amount is measured, i.e. the maximum amount of water is injected into the steam generating vessel, at this time, the corresponding water injection time is the maximum water injection duration Wtm, and the time Tm of the total evaporation of the continuous working water amount is measured.
And then, the water pump injects a fixed amount of water into the steam generating vessel from the water storage tank by default when the steam generating vessel starts to work, the water injection time is the initial water injection time length Wt0, the initial water injection time length Wt0 is lower than the maximum water injection time length Wtm, and the initial water injection time length Wt0 is the first preset water injection time.
And then, continuously detecting the temperature value at the bottom of the steam generating vessel by the temperature sensor, wherein when the evaporation vessel is dry-burned, the corresponding temperature is the water injection critical temperature value, and once the temperature value is the water injection critical temperature value, water is injected. The corresponding water injection time is the time for water injection at each start (T0-Tn) or the time for water injection at each start (Tm 0-Tmn).
In addition, the remaining working time when the critical temperature of water injection is reached each time is divided into two parts by the maximum water injection evaporation time length Tm, if the remaining working time is more than Tm, the water injection time is the maximum water injection time length Wtm, and the corresponding time is the time (T0-Tn) for starting water injection each time; and if the residual working time is less than Tm, the water injection time is the water injection duration Wt 1-Wtn, and the corresponding time is the time (Tm1-Tmn) for starting water injection each time.
It is worth mentioning that the water filling time Wt 1-Wtn is the second preset water filling time, the water filling time length Wt 1-Wtn is lower than the maximum water filling time length Wtm, the values of the water filling time length Wt 1-Wtn are different with different residual working time, and the shorter the residual working time is, the smaller the value of the water filling time length is.
In addition, the method is realized by improving the control of dry burning identification, and the specific mode is as follows:
firstly, a water injection temperature point T0, a maximum sensor temperature Tmax1 after water injection of a steam generation vessel and a maximum sensor temperature Tmax2 when the steam generation vessel is not water and is dried and burnt are measured, and the method comprises the following steps:
firstly, a small amount of water is injected into the steam generating vessel, and the critical temperature point of the evaporating vessel with dry burning is measured during continuous work, namely the water injection temperature point T0.
Secondly, if quantitative water is injected into the steam generating vessel when dry burning occurs, the water injection duration is Wt0, and the maximum temperature Tmax of the sensor after water injection is measured in continuous work, wherein the Tmax is 1.
Thirdly, if water is not injected into the steam generating vessel when dry burning occurs, the highest temperature Tmax of the sensor without water dry burning is measured 2 when the continuous work is carried out.
Further, the temperature sensor continuously detects the temperature value at the bottom of the steam generating vessel in the working process, and if the temperature of the sensor is greater than the temperature T0 of the water injection temperature point, the dry burning identification period timing is started.
Further, when the dry-fire recognition cycle timer is started, the recognition initial temperature T1 at the start of the timer and the recognition end temperature T2 at the end of the timer are recorded, whether or not dry-fire is present is determined based on the difference between the recognition end temperature T2, the recognition end temperature T2, and the recognition initial temperature T1, and if no dry-fire is present, the cycle recognition process is repeated until the operation is finished or dry-fire is present.
The water injection temperature point T0 has a water sensor maximum temperature Tmax1, and the dry burning sensor maximum temperature Tmax2 is T0< Tmax1< Tmax 2. Because of the influence of the residual temperature at the bottom of the evaporation vessel, if the residual temperature rises in a plurality of burning identification periods, T2 is greater than T1; if the residual temperature falls in the burning identification period, T2 is less than T1.
Compared with the traditional method, the method has the outstanding advantages that:
1. according to the water injection control mode of the water pump, a user does not need to frequently add water into the water storage tank of the oven, the use is convenient, meanwhile, a large amount of water is not left when the work is finished, and the user can clean the water conveniently;
2. the dry burning identification control mode has the advantages of low material cost and low fault maintenance cost because no water level sensor is needed.
In this embodiment, the maximum water injection evaporation time Tm is measured, i.e., the maximum amount of water to be injected into the steam generating vessel, and the corresponding water injection time is the maximum water injection time Wtm, and the time Tm of the total evaporation of the continuous working water amount is measured.
When the steam generator starts to work, the water pump injects a fixed amount of water into the steam generator from the water storage tank by default, the water injection time is initial water injection time Wt0, and the time value is about 1/4 of maximum water injection time Wtm.
In the working process, the temperature sensor continuously detects the temperature value at the bottom of the steam generation vessel, when the evaporation vessel is dry-burned, the corresponding temperature is the critical temperature value of water injection, namely, the water pump is controlled to inject water. The corresponding time is the time for each water injection start (T0-Tn) or the time for each water injection start (Tm 0-Tmn).
Dividing the residual working time when the temperature reaches the critical temperature of water injection into two parts by taking the maximum water injection evaporation time Tm as a boundary, wherein if the residual working time is more than Tm, the water injection time is the maximum water injection duration Wtm, and the corresponding time is the time (T0-Tn) for starting water injection each time; and if the residual working time is less than Tm, the water injection time is the water injection duration Wt 1-Wtn, and the corresponding time is the time (Tm1-Tmn) for starting water injection each time.
The water filling time period Wt 1-Wtn is lower than the maximum water filling time period Wtm, and its value differs depending on the remaining operation time, and the shorter the remaining operation time, the smaller the value.
Tm1-Tmn is the residual working time, 1 minute is taken as a stepping unit, the range is Tm-1 to 1, and Wt 1-Wtn respectively corresponds to the water pump water injection time of Tm 1-Tmn.
Referring to fig. 5B, 5C, and 5D, the specific processing method for dry burning recognition in this embodiment:
firstly, measuring a water injection temperature point T0, a sensor maximum temperature Tmax1 after water injection, a sensor maximum temperature Tmax1 after water injection, namely a temperature reference value, and a waterless dry burning sensor maximum temperature Tmax2, wherein the method comprises the following steps:
firstly, a small amount of water is injected into the steam generating vessel, and the critical temperature point of the evaporating vessel with dry burning is measured during continuous work, namely the water injection temperature point T0.
Secondly, if quantitative water is injected into the steam generating vessel when dry burning occurs, the water injection duration is Wt0, and the maximum temperature Tmax of the sensor after water injection is measured in continuous work, wherein the Tmax is 1.
Thirdly, if water is not injected into the steam generating vessel when dry burning occurs, the highest temperature Tmax of the sensor without water dry burning is measured 2 when the continuous work is carried out.
Further, the temperature sensor continuously detects the temperature value at the bottom of the steam generating vessel in the working process, and if the temperature of the sensor is greater than the temperature T0 of the water injection temperature point, the dry burning identification period timing is started.
Further, when the dry-fire recognition cycle timer is started, the recognition initial temperature T1 at the beginning of the timer and the recognition end temperature T2 at the end of the timer are recorded, and whether dry-fire is present or not is determined according to the difference between the recognition end temperature T2, the recognition end temperature T2 and the recognition initial temperature T1, and the specific method is as follows with reference to the 3 dry-fire recognition cases shown in fig. 5B, 5C and 5D:
a1: as shown in fig. 5B, the temperature of the bottom of the evaporation vessel is in the rising stage in the dry burning recognition period, and if the recognition ending temperature T2 is greater than the maximum sensor temperature Tmax1 after water injection, the operation is dry burning.
A2: as shown in fig. 5C, the temperature at the bottom of the evaporation vessel is in the rising stage in the dry-fire identification period, the identification ending temperature T2 is greater than the identification initial temperature T1 but less than the maximum temperature Tmax1 of the sensor after water injection, and the difference (T2-T1) during dry-fire in the absence of water is greater than the difference during presence of water, and a proper threshold is selected according to the difference to determine whether dry-fire occurs.
A3: as shown in fig. 5D, the temperature at the bottom of the evaporation vessel is in the descending stage in the dry-fire identification period, the identification ending temperature T2 is lower than the identification initial temperature T1, the difference (T1-T2) in the case of water shortage and dry-fire is lower than the difference in the case of water, and a proper threshold value is selected according to the difference to determine whether dry-fire occurs.
The water injection temperature point T0 has a water sensor maximum temperature Tmax1, and the dry burning sensor maximum temperature Tmax2 is T0< Tmax1< Tmax 2. In this embodiment, the dry combustion identification period is greater than 30S and less than 50S, and the water injection temperature point T0 is greater than 90 ℃ and less than 100 ℃.
In one embodiment, as shown in FIG. 2, a water-filling control apparatus is provided, comprising a water-filling module 310 and a detection module 330, wherein:
the water injection module 310 is used to inject water into the steam generation vessel.
The detection module 330 is used for detecting whether a dry burning event occurs.
The water injection module 310 is further configured to inject water into the steam generating vessel when the dry-fire event occurs.
In one embodiment, the water injection module comprises:
the residual working time obtaining submodule is used for obtaining residual working time;
the time comparison submodule is used for detecting whether the residual working time is greater than the maximum evaporation time or not when the dry burning event occurs;
and the maximum water injection submodule is used for acquiring the maximum water injection amount when the residual working time is greater than the maximum evaporation time, and injecting water to the steam generation vessel according to the maximum water injection amount.
In one embodiment, the water injection module further comprises:
and the second water injection submodule is used for acquiring a second preset water injection amount when the residual working time is less than or equal to the maximum evaporation time, and injecting water to the steam generation vessel according to the second preset water injection amount.
In one embodiment, the second preset water injection amount is in positive correlation with the remaining working time.
In one embodiment, the water injection control device further comprises:
the maximum water injection quantity obtaining module is used for obtaining the maximum water injection quantity;
the maximum water injection module is used for injecting water to the steam generation vessel according to the maximum water injection amount;
and the maximum evaporation time acquisition module is used for detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to acquire the maximum evaporation time.
In one embodiment, the water injection module comprises:
the first preset water injection quantity obtaining submodule is used for obtaining a first preset water injection quantity;
and the first water injection submodule is used for injecting water to the steam generation vessel according to the first preset water injection amount.
In one embodiment, the detection module comprises:
the temperature value acquisition submodule is used for acquiring a temperature value of the steam generation vessel;
and the dry-burning event detection submodule is used for detecting that the dry-burning event occurs in the steam generating vessel according to the temperature value of the steam generating vessel.
For specific limitations of the water injection control device, reference may be made to the limitations of the water injection control method above, and further description thereof is omitted here. All or part of each module in the water injection control device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which in various embodiments is a steam oven, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, a data interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used for storing data such as a water injection control method and the like. The data interface of the computer equipment is used for being connected with the temperature sensor and the water pump. The computer program is executed by a processor to implement a water-filling control method.
Those skilled in the art will appreciate that the architecture shown in fig. 3 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
water is injected into the steam generating vessel.
And detecting whether a dry burning event occurs.
When the dry-fire event occurs, water is injected into the steam generating vessel.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and acquiring the remaining working time.
When the dry-fire event occurs, detecting whether the remaining working time is greater than the maximum evaporation time.
And when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and when the residual working time is less than or equal to the maximum evaporation time, acquiring a second preset water injection amount, and injecting water to the steam generation vessel according to the second preset water injection amount.
In one embodiment, the second preset water injection amount is in positive correlation with the remaining working time.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and obtaining the maximum water injection amount.
And injecting water into the steam generation vessel according to the maximum water injection amount.
And detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to obtain the maximum evaporation time.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and acquiring a first preset water injection amount.
And injecting water into the steam generation vessel according to the first preset water injection amount.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
a temperature value of the steam generating vessel is obtained.
Detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
water is injected into the steam generating vessel.
And detecting whether a dry burning event occurs.
When the dry-fire event occurs, water is injected into the steam generating vessel.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring the remaining working time.
When the dry-fire event occurs, detecting whether the remaining working time is greater than the maximum evaporation time.
And when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and when the residual working time is less than or equal to the maximum evaporation time, acquiring a second preset water injection amount, and injecting water to the steam generation vessel according to the second preset water injection amount.
In one embodiment, the second preset water injection amount is in positive correlation with the remaining working time.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and obtaining the maximum water injection amount.
And injecting water into the steam generation vessel according to the maximum water injection amount.
And detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to obtain the maximum evaporation time.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring a first preset water injection amount.
And injecting water into the steam generation vessel according to the first preset water injection amount.
In one embodiment, the computer program when executed by the processor further performs the steps of:
a temperature value of the steam generating vessel is obtained.
Detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A water injection control method, the method comprising:
acquiring a first preset water injection amount; the first preset water injection amount is less than the maximum water injection amount;
injecting water into the steam generating vessel according to the first preset water injection amount;
detecting whether a dry burning event occurs;
when the dry burning event occurs, acquiring the residual working time; when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount;
the step of detecting whether a dry-fire event occurs comprises: acquiring a temperature value of the steam generating vessel; detecting whether the change amplitude of the temperature value of the steam generating vessel in first preset time is greater than a first preset threshold value or not; when the change amplitude of the temperature value of the steam generating vessel in first preset time is larger than a first preset threshold value, determining that the steam generating vessel has the dry burning event; the first preset threshold value is the rising amplitude of the temperature value of the steam generating vessel filled with water in a first preset time when the steam generating vessel is in a working state;
the step of injecting water into the steam generating vessel when the dry-fire event occurs further comprises:
and when the residual working time is less than or equal to the maximum evaporation time, acquiring a second preset water injection amount, and injecting water into the steam generation vessel according to the second preset water injection amount, wherein the second preset water injection amount is less than the maximum water injection amount.
2. The method according to claim 1, wherein the second predetermined water injection amount is positively correlated to the remaining operation time.
3. The method of claim 1, wherein the step of detecting whether the remaining operating time is greater than a maximum evaporation time is preceded by:
obtaining the maximum water injection amount;
injecting water into the steam generating vessel according to the maximum water injection amount;
and detecting the time for evaporating the water with the maximum water injection amount by the continuous work of the steam generation vessel to obtain the maximum evaporation time.
4. The method of claim 1, wherein the step of detecting whether a dry-fire event has occurred comprises:
acquiring a temperature value of the steam generating vessel;
detecting the occurrence of the dry-fire event in the steam generating vessel based on the temperature value of the steam generating vessel.
5. A water injection control apparatus, the apparatus comprising:
the water injection module is used for acquiring a first preset water injection amount; injecting water into the steam generating vessel according to the first preset water injection amount; the first preset water injection amount is less than the maximum water injection amount;
the detection module is used for detecting whether a dry burning event occurs or not;
the water injection module is also used for acquiring the residual working time when the dry burning event occurs; when the residual working time is longer than the maximum evaporation time, acquiring the maximum water injection amount, and injecting water into the steam generation vessel according to the maximum water injection amount;
the detection module is also used for acquiring the temperature value of the steam generating vessel; detecting whether the change amplitude of the temperature value of the steam generating vessel in first preset time is greater than a first preset threshold value or not; when the change amplitude of the temperature value of the steam generating vessel in first preset time is larger than a first preset threshold value, determining that the steam generating vessel has the dry burning event; the first preset threshold value is the rising amplitude of the temperature value of the steam generating vessel filled with water in a first preset time when the steam generating vessel is in a working state;
the water injection module comprises:
and the second water injection module is used for acquiring a second preset water injection amount when the residual working time is less than or equal to the maximum evaporation time, and injecting water into the steam generation vessel according to the second preset water injection amount, wherein the second preset water injection amount is less than the maximum water injection amount.
6. The apparatus of claim 5, wherein the water injection module further comprises: and the second water injection submodule is used for acquiring a second preset water injection amount when the residual working time is less than or equal to the maximum evaporation time, and injecting water to the steam generation vessel according to the second preset water injection amount.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 4 are implemented when the computer program is executed by the processor.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
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| CN110326961B (en) * | 2019-06-27 | 2021-08-27 | 宁波奥克斯厨电制造有限公司 | Automatic water adding control method and system for electric steam box |
| CN110338640A (en) * | 2019-07-16 | 2019-10-18 | 宁波奥克斯电气股份有限公司 | A kind of electricity control method of steam box, control device and electric steam box |
| CN111000425A (en) * | 2019-11-22 | 2020-04-14 | 华帝股份有限公司 | Water quantity detection method for steam generator and cooking device |
| CN111012190B (en) * | 2019-11-29 | 2021-04-02 | 广东美的厨房电器制造有限公司 | Control method and device of steam generator, electronic equipment and storage medium |
| CN112870501A (en) * | 2019-11-29 | 2021-06-01 | 深圳市大雅医疗技术有限公司 | Breathing machine control method and device, breathing machine and storage medium |
| CN111248728B (en) * | 2020-02-07 | 2023-01-13 | 青岛海尔智慧厨房电器有限公司 | Steam box and control method thereof |
| CN111904263B (en) * | 2020-05-13 | 2021-08-20 | 宁波方太厨具有限公司 | Water adding method of electric steam box |
| CN114468746A (en) * | 2020-11-13 | 2022-05-13 | 杭州九阳小家电有限公司 | Control method of disc type water storage steam generator and cooking equipment |
| CN114515105B (en) * | 2020-11-19 | 2023-06-30 | 广东美的生活电器制造有限公司 | Cooking appliance, control method and control device for preventing pump from being pumped dry and storage medium |
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